.login-component {
     background-image: url(../image/background.jpg);
     background-size: 100% 100%;
     width: 100%;
     height: 100%;
 }

.login-component .operation-div {
    width: 500px;
    height: fit-content;
    text-align: center;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
}
